summaryrefslogtreecommitdiffstats
path: root/media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c')
-rw-r--r--media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c519
1 files changed, 519 insertions, 0 deletions
diff --git a/media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c b/media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c
new file mode 100644
index 000000000..4b1c95957
--- /dev/null
+++ b/media/libvpx/vp9/encoder/vp9_aq_cyclicrefresh.c
@@ -0,0 +1,519 @@
+/*
+ * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <limits.h>
+#include <math.h>
+
+#include "vp9/encoder/vp9_aq_cyclicrefresh.h"
+
+#include "vp9/common/vp9_seg_common.h"
+
+#include "vp9/encoder/vp9_ratectrl.h"
+#include "vp9/encoder/vp9_segmentation.h"
+
+struct CYCLIC_REFRESH {
+ // Percentage of blocks per frame that are targeted as candidates
+ // for cyclic refresh.
+ int percent_refresh;
+ // Maximum q-delta as percentage of base q.
+ int max_qdelta_perc;
+ // Superblock starting index for cycling through the frame.
+ int sb_index;
+ // Controls how long block will need to wait to be refreshed again, in
+ // excess of the cycle time, i.e., in the case of all zero motion, block
+ // will be refreshed every (100/percent_refresh + time_for_refresh) frames.
+ int time_for_refresh;
+ // Target number of (8x8) blocks that are set for delta-q.
+ int target_num_seg_blocks;
+ // Actual number of (8x8) blocks that were applied delta-q.
+ int actual_num_seg1_blocks;
+ int actual_num_seg2_blocks;
+ // RD mult. parameters for segment 1.
+ int rdmult;
+ // Cyclic refresh map.
+ signed char *map;
+ // Thresholds applied to the projected rate/distortion of the coding block,
+ // when deciding whether block should be refreshed.
+ int64_t thresh_rate_sb;
+ int64_t thresh_dist_sb;
+ // Threshold applied to the motion vector (in units of 1/8 pel) of the
+ // coding block, when deciding whether block should be refreshed.
+ int16_t motion_thresh;
+ // Rate target ratio to set q delta.
+ double rate_ratio_qdelta;
+ double low_content_avg;
+ int qindex_delta_seg1;
+ int qindex_delta_seg2;
+};
+
+CYCLIC_REFRESH *vp9_cyclic_refresh_alloc(int mi_rows, int mi_cols) {
+ CYCLIC_REFRESH *const cr = vpx_calloc(1, sizeof(*cr));
+ if (cr == NULL)
+ return NULL;
+
+ cr->map = vpx_calloc(mi_rows * mi_cols, sizeof(*cr->map));
+ if (cr->map == NULL) {
+ vpx_free(cr);
+ return NULL;
+ }
+
+ return cr;
+}
+
+void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr) {
+ vpx_free(cr->map);
+ vpx_free(cr);
+}
+
+// Check if we should turn off cyclic refresh based on bitrate condition.
+static int apply_cyclic_refresh_bitrate(const VP9_COMMON *cm,
+ const RATE_CONTROL *rc) {
+ // Turn off cyclic refresh if bits available per frame is not sufficiently
+ // larger than bit cost of segmentation. Segment map bit cost should scale
+ // with number of seg blocks, so compare available bits to number of blocks.
+ // Average bits available per frame = avg_frame_bandwidth
+ // Number of (8x8) blocks in frame = mi_rows * mi_cols;
+ const float factor = 0.25;
+ const int number_blocks = cm->mi_rows * cm->mi_cols;
+ // The condition below corresponds to turning off at target bitrates:
+ // (at 30fps), ~12kbps for CIF, 36kbps for VGA, 100kps for HD/720p.
+ // Also turn off at very small frame sizes, to avoid too large fraction of
+ // superblocks to be refreshed per frame. Threshold below is less than QCIF.
+ if (rc->avg_frame_bandwidth < factor * number_blocks ||
+ number_blocks / 64 < 5)
+ return 0;
+ else
+ return 1;
+}
+
+// Check if this coding block, of size bsize, should be considered for refresh
+// (lower-qp coding). Decision can be based on various factors, such as
+// size of the coding block (i.e., below min_block size rejected), coding
+// mode, and rate/distortion.
+static int candidate_refresh_aq(const CYCLIC_REFRESH *cr,
+ const MB_MODE_INFO *mbmi,
+ int64_t rate,
+ int64_t dist,
+ int bsize) {
+ MV mv = mbmi->mv[0].as_mv;
+ // Reject the block for lower-qp coding if projected distortion
+ // is above the threshold, and any of the following is true:
+ // 1) mode uses large mv
+ // 2) mode is an intra-mode
+ // Otherwise accept for refresh.
+ if (dist > cr->thresh_dist_sb &&
+ (mv.row > cr->motion_thresh || mv.row < -cr->motion_thresh ||
+ mv.col > cr->motion_thresh || mv.col < -cr->motion_thresh ||
+ !is_inter_block(mbmi)))
+ return CR_SEGMENT_ID_BASE;
+ else if (bsize >= BLOCK_16X16 &&
+ rate < cr->thresh_rate_sb &&
+ is_inter_block(mbmi) &&
+ mbmi->mv[0].as_int == 0)
+ // More aggressive delta-q for bigger blocks with zero motion.
+ return CR_SEGMENT_ID_BOOST2;
+ else
+ return CR_SEGMENT_ID_BOOST1;
+}
+
+// Compute delta-q for the segment.
+static int compute_deltaq(const VP9_COMP *cpi, int q, double rate_factor) {
+ const CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ const RATE_CONTROL *const rc = &cpi->rc;
+ int deltaq = vp9_compute_qdelta_by_rate(rc, cpi->common.frame_type,
+ q, rate_factor,
+ cpi->common.bit_depth);
+ if ((-deltaq) > cr->max_qdelta_perc * q / 100) {
+ deltaq = -cr->max_qdelta_perc * q / 100;
+ }
+ return deltaq;
+}
+
+// For the just encoded frame, estimate the bits, incorporating the delta-q
+// from non-base segment. For now ignore effect of multiple segments
+// (with different delta-q). Note this function is called in the postencode
+// (called from rc_update_rate_correction_factors()).
+int vp9_cyclic_refresh_estimate_bits_at_q(const VP9_COMP *cpi,
+ double correction_factor) {
+ const VP9_COMMON *const cm = &cpi->common;
+ const CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ int estimated_bits;
+ int mbs = cm->MBs;
+ int num8x8bl = mbs << 2;
+ // Weight for non-base segments: use actual number of blocks refreshed in
+ // previous/just encoded frame. Note number of blocks here is in 8x8 units.
+ double weight_segment1 = (double)cr->actual_num_seg1_blocks / num8x8bl;
+ double weight_segment2 = (double)cr->actual_num_seg2_blocks / num8x8bl;
+ // Take segment weighted average for estimated bits.
+ estimated_bits = (int)((1.0 - weight_segment1 - weight_segment2) *
+ vp9_estimate_bits_at_q(cm->frame_type, cm->base_qindex, mbs,
+ correction_factor, cm->bit_depth) +
+ weight_segment1 *
+ vp9_estimate_bits_at_q(cm->frame_type,
+ cm->base_qindex + cr->qindex_delta_seg1, mbs,
+ correction_factor, cm->bit_depth) +
+ weight_segment2 *
+ vp9_estimate_bits_at_q(cm->frame_type,
+ cm->base_qindex + cr->qindex_delta_seg2, mbs,
+ correction_factor, cm->bit_depth));
+ return estimated_bits;
+}
+
+// Prior to encoding the frame, estimate the bits per mb, for a given q = i and
+// a corresponding delta-q (for segment 1). This function is called in the
+// rc_regulate_q() to set the base qp index.
+// Note: the segment map is set to either 0/CR_SEGMENT_ID_BASE (no refresh) or
+// to 1/CR_SEGMENT_ID_BOOST1 (refresh) for each superblock, prior to encoding.
+int vp9_cyclic_refresh_rc_bits_per_mb(const VP9_COMP *cpi, int i,
+ double correction_factor) {
+ const VP9_COMMON *const cm = &cpi->common;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ int bits_per_mb;
+ int num8x8bl = cm->MBs << 2;
+ // Weight for segment prior to encoding: take the average of the target
+ // number for the frame to be encoded and the actual from the previous frame.
+ double weight_segment = (double)((cr->target_num_seg_blocks +
+ cr->actual_num_seg1_blocks + cr->actual_num_seg2_blocks) >> 1) /
+ num8x8bl;
+ // Compute delta-q corresponding to qindex i.
+ int deltaq = compute_deltaq(cpi, i, cr->rate_ratio_qdelta);
+ // Take segment weighted average for bits per mb.
+ bits_per_mb = (int)((1.0 - weight_segment) *
+ vp9_rc_bits_per_mb(cm->frame_type, i, correction_factor, cm->bit_depth) +
+ weight_segment *
+ vp9_rc_bits_per_mb(cm->frame_type, i + deltaq, correction_factor,
+ cm->bit_depth));
+ return bits_per_mb;
+}
+
+// Prior to coding a given prediction block, of size bsize at (mi_row, mi_col),
+// check if we should reset the segment_id, and update the cyclic_refresh map
+// and segmentation map.
+void vp9_cyclic_refresh_update_segment(VP9_COMP *const cpi,
+ MB_MODE_INFO *const mbmi,
+ int mi_row, int mi_col,
+ BLOCK_SIZE bsize,
+ int64_t rate,
+ int64_t dist,
+ int skip) {
+ const VP9_COMMON *const cm = &cpi->common;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ const int bw = num_8x8_blocks_wide_lookup[bsize];
+ const int bh = num_8x8_blocks_high_lookup[bsize];
+ const int xmis = MIN(cm->mi_cols - mi_col, bw);
+ const int ymis = MIN(cm->mi_rows - mi_row, bh);
+ const int block_index = mi_row * cm->mi_cols + mi_col;
+ const int refresh_this_block = candidate_refresh_aq(cr, mbmi, rate, dist,
+ bsize);
+ // Default is to not update the refresh map.
+ int new_map_value = cr->map[block_index];
+ int x = 0; int y = 0;
+
+ // If this block is labeled for refresh, check if we should reset the
+ // segment_id.
+ if (cyclic_refresh_segment_id_boosted(mbmi->segment_id)) {
+ mbmi->segment_id = refresh_this_block;
+ // Reset segment_id if will be skipped.
+ if (skip)
+ mbmi->segment_id = CR_SEGMENT_ID_BASE;
+ }
+
+ // Update the cyclic refresh map, to be used for setting segmentation map
+ // for the next frame. If the block will be refreshed this frame, mark it
+ // as clean. The magnitude of the -ve influences how long before we consider
+ // it for refresh again.
+ if (cyclic_refresh_segment_id_boosted(mbmi->segment_id)) {
+ new_map_value = -cr->time_for_refresh;
+ } else if (refresh_this_block) {
+ // Else if it is accepted as candidate for refresh, and has not already
+ // been refreshed (marked as 1) then mark it as a candidate for cleanup
+ // for future time (marked as 0), otherwise don't update it.
+ if (cr->map[block_index] == 1)
+ new_map_value = 0;
+ } else {
+ // Leave it marked as block that is not candidate for refresh.
+ new_map_value = 1;
+ }
+
+ // Update entries in the cyclic refresh map with new_map_value, and
+ // copy mbmi->segment_id into global segmentation map.
+ for (y = 0; y < ymis; y++)
+ for (x = 0; x < xmis; x++) {
+ cr->map[block_index + y * cm->mi_cols + x] = new_map_value;
+ cpi->segmentation_map[block_index + y * cm->mi_cols + x] =
+ mbmi->segment_id;
+ }
+}
+
+// Update the actual number of blocks that were applied the segment delta q.
+void vp9_cyclic_refresh_postencode(VP9_COMP *const cpi) {
+ VP9_COMMON *const cm = &cpi->common;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ unsigned char *const seg_map = cpi->segmentation_map;
+ int mi_row, mi_col;
+ cr->actual_num_seg1_blocks = 0;
+ cr->actual_num_seg2_blocks = 0;
+ for (mi_row = 0; mi_row < cm->mi_rows; mi_row++)
+ for (mi_col = 0; mi_col < cm->mi_cols; mi_col++) {
+ if (cyclic_refresh_segment_id(
+ seg_map[mi_row * cm->mi_cols + mi_col]) == CR_SEGMENT_ID_BOOST1)
+ cr->actual_num_seg1_blocks++;
+ else if (cyclic_refresh_segment_id(
+ seg_map[mi_row * cm->mi_cols + mi_col]) == CR_SEGMENT_ID_BOOST2)
+ cr->actual_num_seg2_blocks++;
+ }
+}
+
+// Set golden frame update interval, for non-svc 1 pass CBR mode.
+void vp9_cyclic_refresh_set_golden_update(VP9_COMP *const cpi) {
+ RATE_CONTROL *const rc = &cpi->rc;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ // Set minimum gf_interval for GF update to a multiple (== 2) of refresh
+ // period. Depending on past encoding stats, GF flag may be reset and update
+ // may not occur until next baseline_gf_interval.
+ if (cr->percent_refresh > 0)
+ rc->baseline_gf_interval = 4 * (100 / cr->percent_refresh);
+ else
+ rc->baseline_gf_interval = 40;
+}
+
+// Update some encoding stats (from the just encoded frame). If this frame's
+// background has high motion, refresh the golden frame. Otherwise, if the
+// golden reference is to be updated check if we should NOT update the golden
+// ref.
+void vp9_cyclic_refresh_check_golden_update(VP9_COMP *const cpi) {
+ VP9_COMMON *const cm = &cpi->common;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ int mi_row, mi_col;
+ double fraction_low = 0.0;
+ int low_content_frame = 0;
+
+ MODE_INFO **mi = cm->mi_grid_visible;
+ RATE_CONTROL *const rc = &cpi->rc;
+ const int rows = cm->mi_rows, cols = cm->mi_cols;
+ int cnt1 = 0, cnt2 = 0;
+ int force_gf_refresh = 0;
+
+ for (mi_row = 0; mi_row < rows; mi_row++) {
+ for (mi_col = 0; mi_col < cols; mi_col++) {
+ int16_t abs_mvr = mi[0]->mbmi.mv[0].as_mv.row >= 0 ?
+ mi[0]->mbmi.mv[0].as_mv.row : -1 * mi[0]->mbmi.mv[0].as_mv.row;
+ int16_t abs_mvc = mi[0]->mbmi.mv[0].as_mv.col >= 0 ?
+ mi[0]->mbmi.mv[0].as_mv.col : -1 * mi[0]->mbmi.mv[0].as_mv.col;
+
+ // Calculate the motion of the background.
+ if (abs_mvr <= 16 && abs_mvc <= 16) {
+ cnt1++;
+ if (abs_mvr == 0 && abs_mvc == 0)
+ cnt2++;
+ }
+ mi++;
+
+ // Accumulate low_content_frame.
+ if (cr->map[mi_row * cols + mi_col] < 1)
+ low_content_frame++;
+ }
+ mi += 8;
+ }
+
+ // For video conference clips, if the background has high motion in current
+ // frame because of the camera movement, set this frame as the golden frame.
+ // Use 70% and 5% as the thresholds for golden frame refreshing.
+ if (cnt1 * 10 > (70 * rows * cols) && cnt2 * 20 < cnt1) {
+ vp9_cyclic_refresh_set_golden_update(cpi);
+ rc->frames_till_gf_update_due = rc->baseline_gf_interval;
+
+ if (rc->frames_till_gf_update_due > rc->frames_to_key)
+ rc->frames_till_gf_update_due = rc->frames_to_key;
+ cpi->refresh_golden_frame = 1;
+ force_gf_refresh = 1;
+ }
+
+ fraction_low =
+ (double)low_content_frame / (rows * cols);
+ // Update average.
+ cr->low_content_avg = (fraction_low + 3 * cr->low_content_avg) / 4;
+ if (!force_gf_refresh && cpi->refresh_golden_frame == 1) {
+ // Don't update golden reference if the amount of low_content for the
+ // current encoded frame is small, or if the recursive average of the
+ // low_content over the update interval window falls below threshold.
+ if (fraction_low < 0.8 || cr->low_content_avg < 0.7)
+ cpi->refresh_golden_frame = 0;
+ // Reset for next internal.
+ cr->low_content_avg = fraction_low;
+ }
+}
+
+// Update the segmentation map, and related quantities: cyclic refresh map,
+// refresh sb_index, and target number of blocks to be refreshed.
+// The map is set to either 0/CR_SEGMENT_ID_BASE (no refresh) or to
+// 1/CR_SEGMENT_ID_BOOST1 (refresh) for each superblock.
+// Blocks labeled as BOOST1 may later get set to BOOST2 (during the
+// encoding of the superblock).
+static void cyclic_refresh_update_map(VP9_COMP *const cpi) {
+ VP9_COMMON *const cm = &cpi->common;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ unsigned char *const seg_map = cpi->segmentation_map;
+ int i, block_count, bl_index, sb_rows, sb_cols, sbs_in_frame;
+ int xmis, ymis, x, y;
+ memset(seg_map, CR_SEGMENT_ID_BASE, cm->mi_rows * cm->mi_cols);
+ sb_cols = (cm->mi_cols + MI_BLOCK_SIZE - 1) / MI_BLOCK_SIZE;
+ sb_rows = (cm->mi_rows + MI_BLOCK_SIZE - 1) / MI_BLOCK_SIZE;
+ sbs_in_frame = sb_cols * sb_rows;
+ // Number of target blocks to get the q delta (segment 1).
+ block_count = cr->percent_refresh * cm->mi_rows * cm->mi_cols / 100;
+ // Set the segmentation map: cycle through the superblocks, starting at
+ // cr->mb_index, and stopping when either block_count blocks have been found
+ // to be refreshed, or we have passed through whole frame.
+ assert(cr->sb_index < sbs_in_frame);
+ i = cr->sb_index;
+ cr->target_num_seg_blocks = 0;
+ do {
+ int sum_map = 0;
+ // Get the mi_row/mi_col corresponding to superblock index i.
+ int sb_row_index = (i / sb_cols);
+ int sb_col_index = i - sb_row_index * sb_cols;
+ int mi_row = sb_row_index * MI_BLOCK_SIZE;
+ int mi_col = sb_col_index * MI_BLOCK_SIZE;
+ assert(mi_row >= 0 && mi_row < cm->mi_rows);
+ assert(mi_col >= 0 && mi_col < cm->mi_cols);
+ bl_index = mi_row * cm->mi_cols + mi_col;
+ // Loop through all 8x8 blocks in superblock and update map.
+ xmis = MIN(cm->mi_cols - mi_col,
+ num_8x8_blocks_wide_lookup[BLOCK_64X64]);
+ ymis = MIN(cm->mi_rows - mi_row,
+ num_8x8_blocks_high_lookup[BLOCK_64X64]);
+ for (y = 0; y < ymis; y++) {
+ for (x = 0; x < xmis; x++) {
+ const int bl_index2 = bl_index + y * cm->mi_cols + x;
+ // If the block is as a candidate for clean up then mark it
+ // for possible boost/refresh (segment 1). The segment id may get
+ // reset to 0 later if block gets coded anything other than ZEROMV.
+ if (cr->map[bl_index2] == 0) {
+ sum_map++;
+ } else if (cr->map[bl_index2] < 0) {
+ cr->map[bl_index2]++;
+ }
+ }
+ }
+ // Enforce constant segment over superblock.
+ // If segment is at least half of superblock, set to 1.
+ if (sum_map >= xmis * ymis / 2) {
+ for (y = 0; y < ymis; y++)
+ for (x = 0; x < xmis; x++) {
+ seg_map[bl_index + y * cm->mi_cols + x] = CR_SEGMENT_ID_BOOST1;
+ }
+ cr->target_num_seg_blocks += xmis * ymis;
+ }
+ i++;
+ if (i == sbs_in_frame) {
+ i = 0;
+ }
+ } while (cr->target_num_seg_blocks < block_count && i != cr->sb_index);
+ cr->sb_index = i;
+}
+
+// Set/update global/frame level cyclic refresh parameters.
+void vp9_cyclic_refresh_update_parameters(VP9_COMP *const cpi) {
+ const RATE_CONTROL *const rc = &cpi->rc;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ cr->percent_refresh = 10;
+ // Use larger delta-qp (increase rate_ratio_qdelta) for first few (~4)
+ // periods of the refresh cycle, after a key frame. This corresponds to ~40
+ // frames with cr->percent_refresh = 10.
+ if (rc->frames_since_key < 40)
+ cr->rate_ratio_qdelta = 3.0;
+ else
+ cr->rate_ratio_qdelta = 2.0;
+}
+
+// Setup cyclic background refresh: set delta q and segmentation map.
+void vp9_cyclic_refresh_setup(VP9_COMP *const cpi) {
+ VP9_COMMON *const cm = &cpi->common;
+ const RATE_CONTROL *const rc = &cpi->rc;
+ CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
+ struct segmentation *const seg = &cm->seg;
+ const int apply_cyclic_refresh = apply_cyclic_refresh_bitrate(cm, rc);
+ if (cm->current_video_frame == 0)
+ cr->low_content_avg = 0.0;
+ // Don't apply refresh on key frame or enhancement layer frames.
+ if (!apply_cyclic_refresh ||
+ (cm->frame_type == KEY_FRAME) ||
+ (cpi->svc.temporal_layer_id > 0) ||
+ (cpi->svc.spatial_layer_id > 0)) {
+ // Set segmentation map to 0 and disable.
+ unsigned char *const seg_map = cpi->segmentation_map;
+ memset(seg_map, 0, cm->mi_rows * cm->mi_cols);
+ vp9_disable_segmentation(&cm->seg);
+ if (cm->frame_type == KEY_FRAME)
+ cr->sb_index = 0;
+ return;
+ } else {
+ int qindex_delta = 0;
+ int qindex2;
+ const double q = vp9_convert_qindex_to_q(cm->base_qindex, cm->bit_depth);
+ vp9_clear_system_state();
+ cr->max_qdelta_perc = 50;
+ cr->time_for_refresh = 0;
+ // Set rate threshold to some multiple (set to 2 for now) of the target
+ // rate (target is given by sb64_target_rate and scaled by 256).
+ cr->thresh_rate_sb = ((int64_t)(rc->sb64_target_rate) << 8) << 2;
+ // Distortion threshold, quadratic in Q, scale factor to be adjusted.
+ // q will not exceed 457, so (q * q) is within 32bit; see:
+ // vp9_convert_qindex_to_q(), vp9_ac_quant(), ac_qlookup*[].
+ cr->thresh_dist_sb = ((int64_t)(q * q)) << 2;
+ cr->motion_thresh = 32;
+ // Set up segmentation.
+ // Clear down the segment map.
+ vp9_enable_segmentation(&cm->seg);
+ vp9_clearall_segfeatures(seg);
+ // Select delta coding method.
+ seg->abs_delta = SEGMENT_DELTADATA;
+
+ // Note: setting temporal_update has no effect, as the seg-map coding method
+ // (temporal or spatial) is determined in vp9_choose_segmap_coding_method(),
+ // based on the coding cost of each method. For error_resilient mode on the
+ // last_frame_seg_map is set to 0, so if temporal coding is used, it is
+ // relative to 0 previous map.
+ // seg->temporal_update = 0;
+
+ // Segment BASE "Q" feature is disabled so it defaults to the baseline Q.
+ vp9_disable_segfeature(seg, CR_SEGMENT_ID_BASE, SEG_LVL_ALT_Q);
+ // Use segment BOOST1 for in-frame Q adjustment.
+ vp9_enable_segfeature(seg, CR_SEGMENT_ID_BOOST1, SEG_LVL_ALT_Q);
+ // Use segment BOOST2 for more aggressive in-frame Q adjustment.
+ vp9_enable_segfeature(seg, CR_SEGMENT_ID_BOOST2, SEG_LVL_ALT_Q);
+
+ // Set the q delta for segment BOOST1.
+ qindex_delta = compute_deltaq(cpi, cm->base_qindex, cr->rate_ratio_qdelta);
+ cr->qindex_delta_seg1 = qindex_delta;
+
+ // Compute rd-mult for segment BOOST1.
+ qindex2 = clamp(cm->base_qindex + cm->y_dc_delta_q + qindex_delta, 0, MAXQ);
+
+ cr->rdmult = vp9_compute_rd_mult(cpi, qindex2);
+
+ vp9_set_segdata(seg, CR_SEGMENT_ID_BOOST1, SEG_LVL_ALT_Q, qindex_delta);
+
+ // Set a more aggressive (higher) q delta for segment BOOST2.
+ qindex_delta = compute_deltaq(cpi, cm->base_qindex,
+ MIN(CR_MAX_RATE_TARGET_RATIO,
+ CR_BOOST2_FAC * cr->rate_ratio_qdelta));
+ cr->qindex_delta_seg2 = qindex_delta;
+ vp9_set_segdata(seg, CR_SEGMENT_ID_BOOST2, SEG_LVL_ALT_Q, qindex_delta);
+
+ // Update the segmentation and refresh map.
+ cyclic_refresh_update_map(cpi);
+ }
+}
+
+int vp9_cyclic_refresh_get_rdmult(const CYCLIC_REFRESH *cr) {
+ return cr->rdmult;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 01:55:07 +0000